Very hot in Jan
33°C average high
avg high · 19° at night
25°C+ on almost every day
Hawaii, USA
Honolulu (Waikiki) weather in January
Is it warm? Yes. January in Honolulu (Waikiki) is warm: afternoons average 27°C and nights 20°C. Most days (80%) peak between 26°C and 28°C.
Warm · average high
27°C
25°C or more on almost every day.
- Average low20°overnight
- Sea25°average, 2022–2025
- Rainy days434 mm in the month
- SkySome cloud32% cloud · 59% clear days
How warm it really gets
Every January afternoon from 2011–2025: 465 days. Most (80%) peaked between 26° and 28°.
January, year by year
The average January high in each year. The warmest, 2016, averaged 28°C; the coolest, 2013, 27°C.
Compared with home
Average January highs. Expect rain on about 4 days (34 mm in a typical month).
- Honolulu (Waikiki)27°
- Cork9°
- London9°
- Dublin8°
- Belfast8°
- Glasgow7°
- Manchester7°
Warmer in January, not much further
Flying times are estimates from Dublin; Honolulu (Waikiki) is about 14h 15m.
Hot in Jan
29°C average high
avg high · 23° at night
25°C+ on almost every day
Hot in Jan
30°C average high
avg high · 24° at night
25°C+ on almost every day
Air: Copernicus ERA5-Land, 2011–2025, matched to the official averages for Honolulu airport. Sea: Copernicus ERA5, 2022–2025. Rainy days = days with 1 mm of rain or more, as weather stations count them. Clear day = average cloud cover of 30% or less. These are averages of past weather, not a forecast. Methodology